18-29-605.27 Air conditioning and refrigeration systems.

   All new or newly remodeled refrigeration systems employing water from the city mains for condensing purposes in the process of providing space air conditioning for commercial, industrial or residential use shall be closed air conditioning systems employing recirculation of cooling water to conserve water.

18-29-605.28 Permissible exceptions.

   Any exceptions to Section 18-29-605 shall only be permitted by action of the Commissioner of Water Management.

(Amend Coun. J. 11-8-12, p. 38872, § 351; Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 20)

18-29-606 Installation of the Building Water Distribution System.

18-29-606.1 Location of full-open valves.

   Full-open valves shall be installed in the following locations:

   1.   On the building water service pipe from the public water supply near the curb;

   2.   On the water distribution supply pipe at the entrance into the structure;

   3.   On the discharge side of every water meter;

   4.   On the base of every water riser pipe in other than Group R-5 occupancies or townhouses;

   5.   On the top of every water down-feed pipe in occupancies other Group R-5 occupancies;

   6.   On the entrance to every water supply pipe to a dwelling unit, except where supplying a single fixture equipped with individual stops;

   7.   On the water supply pipe to a gravity or pressurized water tank;

   8.   On the water supply pipe to every water heater.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 21)

18-29-606.2 Location of shutoff valves.

   Shutoff valves shall be installed in the following locations:

   1.   On the fixture supply to each plumbing fixture other than bathtubs and showers in Group R occupancies, and other than in individual dwelling units or sleeping units that are provided with unit shutoff valves or shutoff valves for each bathroom group;

   2.   On the water supply pipe to each sillcock;

   3.   On the water supply pipe to each appliance or mechanical equipment; and

   4.   On water services 1 1/2 inches (40 mm) or larger requiring meters either in the building or in a meter vault, valves shall be installed on the inlet and outlet sides of the meter and as near as practicable thereto. Meters on 1-inch (25 mm) services have a valve on the inlet side only. Valves located in the meter vault shall not eliminate the need for the valve in the building. All such valves shall be accessible for operation at all times.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 22)

18-29-606.3 Access to valves.

   Access shall be provided to all required full-open valves and shutoff valves.

18-29-606.4 Valve identification.

   Service and hose bibb valves shall be identified. All other valves installed in locations that are not adjacent to the fixture or appliance shall be identified, indicating the fixture or appliance served.